Apologia Chemistry Module 1

What Does that Mean?

100

Anything that has mass and takes up space

What is Matter

200

A digit in a measurement that is either non-zero, a zero that is between two significant figures, or a zero at the end of the number and to the right of the decimal

What is Significant Figure

300

A method of conversion using the multiplication of fractions

What is factor-label method

400

An indication of how close a measurement is to the true value.

What is Accuracy

500

An indication of the scale on the measuring device that was used

What is Precision

You Should Know This

100

A measure of the amount of matter in an object

What is Mass?

200

A metric unit of volume

What is a Liter?

300

An object's mass divided by the volume that the object occupies

What is density?

400

A distance of 1 inch in the metric system

What is 2.54 cm?

500

A volume of 1.0 gallons in the metric system

What is 3.79 L?

Rounding Off

100

The digits that are meaningful in a number and help us know how precise a measurement is.

What is a significant figure

200

First rule of significant figures

What is "all nonzero digits are significant"

300

Second rule of significant figures

What is "a zero that is between two significant figures"

400

Number of significant figures in 105.340 and 0.00450010

What is 6 and 6

500

The last rule of significant figures

What is "a zero at the end of a number and to the right of the decimal point is significant"

Shorthand

100

A shorthand way of writing numbers so that they always include a decimal point and are more precise

What is scientific notation

200

20,000,000,000,000,000,000 in scientific notation

What is 2 X 10¹⁹

300

How to write a number in scientific notation

What is "a number with a decimal point after the first digit times a 10 raised to some power"

400

Rule about adding and subtracting with significant figures

What is "round your answer so that it has the same precision as the least precise measurement in the calculation"

500

Rule for multiplying and dividing with significant figures

What is "round the answer so that is has the same number of significant figures as the measurement with the fewest significant figures"

Show What You Know!

100

Convert 0.00341 to scientific notation

What is 3.41 x 10^-3

200

The number of significant figures in 0.04500

What is 4

300

The volume in Liters of an object which has a volume of 45.1 mL

What is 0.0451 L

400

The density of a liquid with a mass of 23.13 grams and a volume of 35.0 mL

What is 0.661 grams/mL

500

The number of inches that a road has which is 13.1 miles long.

What is 8.30 x 10⁵